How on earth did it come about?
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This post was last edited by sunjl1981 on 2013-1-6 at 22:55. 1. Calculation basis: (1) The concentration of sulfuric acid entering the tower is 80%, with a temperature of 15°C; the concentration of sulfuric acid exiting the tower is 60%, with a temperature of 30°C. ⑵The moisture content of dried chlorine is 100 ppm. 2. Material balance: (1) The dissolution loss of chlorine gas in sulfuric acid is ignored in the calculations. It is assumed that the amount of moisture absorbed by each kilogram of 80% sulfuric acid is W3 kg; thus, W3 = 80/60 – 1 = 0.3333. (How is this value calculated?) Let the amount of 80% sulfuric acid required for drying be W4 kg; then W4 = 18.794 kg. Assuming that various factors result in a 15% loss of sulfuric acid, the amount of sulfuric acid needed is: 18.794 × 1.15 = 21.613 kg. The amount of dilute acid flowing out of the packed tower is: 18.794 × 1.3333 + 18.794 × 0.15 = 27.877 kg. The amount of moisture contained in the chlorine gas after drying is: 6.349 – 0.3333 × 18.794 = 0.085 kg -
This post was last edited by yzhms on 2010-9-20 08:41. W3 = 1kg * 80%/60% – 1kg = 0.3333kg. This calculation is based on 1kg as the reference value; the sulfuric acid content is converted to 100%, and then divided by 60% to determine the total amount of 60% acid. Subtracting 1kg from this value gives the amount of water.